./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:28:19,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:19,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:19,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:19,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:19,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:19,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:19,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:19,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:19,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:19,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:19,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:19,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:19,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:19,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:19,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:19,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:19,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:19,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:19,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:19,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:19,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:19,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:19,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:19,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:19,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:19,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:19,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:19,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:19,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:19,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:19,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:19,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:19,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:19,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:19,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:19,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:19,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:19,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:19,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:19,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:19,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 09:28:19,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:19,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:19,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:19,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:19,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:19,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:19,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:19,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:19,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:19,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:19,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:28:19,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:19,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:19,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:28:19,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:19,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:28:19,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:28:19,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:28:19,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:19,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:28:19,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:19,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:19,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:19,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:19,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:19,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:19,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:28:19,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:19,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:19,577 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:28:19,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:28:19,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:28:19,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2022-11-20 09:28:19,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:19,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:19,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:19,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:19,918 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:19,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-20 09:28:23,017 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:23,250 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:23,251 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-20 09:28:23,259 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/data/d63b5ff26/28cc537a525e4a088395ebe1575e02ee/FLAG00473204d [2022-11-20 09:28:23,279 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/data/d63b5ff26/28cc537a525e4a088395ebe1575e02ee [2022-11-20 09:28:23,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:23,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:23,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:23,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:23,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:23,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f60128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23, skipping insertion in model container [2022-11-20 09:28:23,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:23,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:23,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:23,524 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:23,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:23,558 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:23,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23 WrapperNode [2022-11-20 09:28:23,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:23,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:23,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:23,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:23,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,591 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-11-20 09:28:23,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:23,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:23,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:23,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:23,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:23,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:23,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:23,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:23,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (1/1) ... [2022-11-20 09:28:23,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:23,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:23,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:23,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:23,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:23,810 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:23,991 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:23,998 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:24,006 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:28:24,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:24 BoogieIcfgContainer [2022-11-20 09:28:24,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:24,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:24,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:24,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:23" (1/3) ... [2022-11-20 09:28:24,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cda9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:24, skipping insertion in model container [2022-11-20 09:28:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:23" (2/3) ... [2022-11-20 09:28:24,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cda9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:24, skipping insertion in model container [2022-11-20 09:28:24,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:24" (3/3) ... [2022-11-20 09:28:24,021 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-20 09:28:24,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:24,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 09:28:24,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:24,136 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@336ff2ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:24,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 09:28:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:28:24,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:24,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:28:24,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2022-11-20 09:28:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:24,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839768954] [2022-11-20 09:28:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:24,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:24,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839768954] [2022-11-20 09:28:24,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839768954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:24,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:24,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:28:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146302705] [2022-11-20 09:28:24,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:24,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:24,559 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:24,700 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-20 09:28:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:24,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 09:28:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:24,713 INFO L225 Difference]: With dead ends: 35 [2022-11-20 09:28:24,714 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 09:28:24,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:24,737 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:24,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 09:28:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 09:28:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-20 09:28:24,807 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-11-20 09:28:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:24,808 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-20 09:28:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-20 09:28:24,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:28:24,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:24,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:28:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:24,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2022-11-20 09:28:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:24,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013734424] [2022-11-20 09:28:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:24,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013734424] [2022-11-20 09:28:24,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013734424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:24,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:24,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:24,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708884653] [2022-11-20 09:28:24,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:24,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:24,925 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:24,978 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-20 09:28:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 09:28:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:24,982 INFO L225 Difference]: With dead ends: 15 [2022-11-20 09:28:24,982 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 09:28:24,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:24,984 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:24,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 12 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 09:28:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 09:28:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-20 09:28:24,990 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2022-11-20 09:28:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:24,991 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-20 09:28:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-20 09:28:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 09:28:24,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:24,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:24,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:24,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2022-11-20 09:28:24,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:24,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009996123] [2022-11-20 09:28:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:24,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009996123] [2022-11-20 09:28:25,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009996123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:25,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:25,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063216725] [2022-11-20 09:28:25,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:25,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:25,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:25,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:25,061 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,090 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-20 09:28:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:25,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 09:28:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,092 INFO L225 Difference]: With dead ends: 15 [2022-11-20 09:28:25,092 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 09:28:25,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:25,094 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 09:28:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-20 09:28:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-20 09:28:25,107 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-11-20 09:28:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,108 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-20 09:28:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-20 09:28:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:28:25,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:28:25,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -440488521, now seen corresponding path program 1 times [2022-11-20 09:28:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704802745] [2022-11-20 09:28:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704802745] [2022-11-20 09:28:25,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704802745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:25,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:25,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677809007] [2022-11-20 09:28:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:25,158 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,186 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-20 09:28:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 09:28:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,187 INFO L225 Difference]: With dead ends: 23 [2022-11-20 09:28:25,188 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 09:28:25,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:25,190 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 09:28:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-20 09:28:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-20 09:28:25,201 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2022-11-20 09:28:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,202 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-20 09:28:25,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-20 09:28:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:28:25,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:28:25,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -440488466, now seen corresponding path program 1 times [2022-11-20 09:28:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827194805] [2022-11-20 09:28:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827194805] [2022-11-20 09:28:25,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827194805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:25,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923449057] [2022-11-20 09:28:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:25,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:25,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:28:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:28:25,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:25,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:25,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923449057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:25,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:25,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-20 09:28:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690028645] [2022-11-20 09:28:25,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:28:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:28:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:25,556 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,643 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-11-20 09:28:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:25,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 09:28:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,645 INFO L225 Difference]: With dead ends: 35 [2022-11-20 09:28:25,646 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 09:28:25,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:25,648 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 09:28:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-20 09:28:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-20 09:28:25,656 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2022-11-20 09:28:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,657 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-20 09:28:25,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-20 09:28:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:28:25,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:25,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435329, now seen corresponding path program 1 times [2022-11-20 09:28:25,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790952070] [2022-11-20 09:28:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790952070] [2022-11-20 09:28:25,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790952070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:25,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491201311] [2022-11-20 09:28:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:25,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:25,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:28:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:28:26,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:26,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:26,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491201311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:26,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:26,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-20 09:28:26,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741293510] [2022-11-20 09:28:26,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:26,146 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:26,190 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-11-20 09:28:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:28:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 09:28:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:26,192 INFO L225 Difference]: With dead ends: 47 [2022-11-20 09:28:26,192 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 09:28:26,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:26,193 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:26,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 09:28:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-11-20 09:28:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-20 09:28:26,205 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 16 [2022-11-20 09:28:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:26,206 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-20 09:28:26,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-20 09:28:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:28:26,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:26,207 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:26,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:28:26,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435274, now seen corresponding path program 1 times [2022-11-20 09:28:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:26,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233343511] [2022-11-20 09:28:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:26,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:26,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:26,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233343511] [2022-11-20 09:28:26,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233343511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:26,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777652189] [2022-11-20 09:28:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:26,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:26,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:26,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:26,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:28:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:28:26,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:26,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:26,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777652189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:26,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:26,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-20 09:28:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630684643] [2022-11-20 09:28:26,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:26,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:28:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:28:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:28:26,841 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:27,410 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-20 09:28:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 09:28:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 09:28:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:27,411 INFO L225 Difference]: With dead ends: 66 [2022-11-20 09:28:27,412 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 09:28:27,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 09:28:27,423 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:27,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 17 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 09:28:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2022-11-20 09:28:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2022-11-20 09:28:27,448 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 16 [2022-11-20 09:28:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:27,448 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2022-11-20 09:28:27,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2022-11-20 09:28:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 09:28:27,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:27,450 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:27,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:27,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:28:27,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1093492138, now seen corresponding path program 2 times [2022-11-20 09:28:27,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:27,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633399819] [2022-11-20 09:28:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:27,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:27,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:27,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633399819] [2022-11-20 09:28:27,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633399819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:27,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029069757] [2022-11-20 09:28:27,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:27,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:27,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:28:27,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:27,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:27,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:28:27,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:27,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:28,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029069757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:28,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:28,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-20 09:28:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113395067] [2022-11-20 09:28:28,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:28,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:28:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:28:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:28:28,109 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:29,018 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2022-11-20 09:28:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 09:28:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 09:28:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:29,025 INFO L225 Difference]: With dead ends: 101 [2022-11-20 09:28:29,025 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 09:28:29,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=483, Invalid=1773, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 09:28:29,027 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:29,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 18 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:29,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 09:28:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-11-20 09:28:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-20 09:28:29,039 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2022-11-20 09:28:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:29,039 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-20 09:28:29,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-20 09:28:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 09:28:29,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:29,041 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-11-20 09:28:29,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:29,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash -382530633, now seen corresponding path program 2 times [2022-11-20 09:28:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:29,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439037922] [2022-11-20 09:28:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:29,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 09:28:29,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:29,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439037922] [2022-11-20 09:28:29,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439037922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:29,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920157139] [2022-11-20 09:28:29,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:29,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:29,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:29,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:29,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:28:29,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:28:29,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:29,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:28:29,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 09:28:29,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 09:28:29,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920157139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:29,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:29,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-11-20 09:28:29,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893520631] [2022-11-20 09:28:29,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:29,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:29,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:29,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:29,471 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:29,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:29,490 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-11-20 09:28:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:29,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-20 09:28:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:29,492 INFO L225 Difference]: With dead ends: 43 [2022-11-20 09:28:29,492 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 09:28:29,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:29,493 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:29,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 09:28:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-20 09:28:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-20 09:28:29,505 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2022-11-20 09:28:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:29,505 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-20 09:28:29,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-20 09:28:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 09:28:29,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:29,507 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2022-11-20 09:28:29,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 09:28:29,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 09:28:29,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:29,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:29,712 INFO L85 PathProgramCache]: Analyzing trace with hash -382530578, now seen corresponding path program 3 times [2022-11-20 09:28:29,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:29,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565622972] [2022-11-20 09:28:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:29,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565622972] [2022-11-20 09:28:29,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565622972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:29,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903307388] [2022-11-20 09:28:29,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:28:29,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:29,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:29,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:28:29,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-20 09:28:29,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:29,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:28:29,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:30,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:30,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903307388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:30,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:30,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-20 09:28:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592737770] [2022-11-20 09:28:30,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:30,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:28:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:28:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:28:30,188 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:31,766 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2022-11-20 09:28:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-20 09:28:31,766 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-20 09:28:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:31,767 INFO L225 Difference]: With dead ends: 154 [2022-11-20 09:28:31,768 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 09:28:31,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1886, Invalid=5770, Unknown=0, NotChecked=0, Total=7656 [2022-11-20 09:28:31,772 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 335 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:31,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 21 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:28:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 09:28:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 106. [2022-11-20 09:28:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-11-20 09:28:31,792 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 37 [2022-11-20 09:28:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:31,792 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-11-20 09:28:31,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-11-20 09:28:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 09:28:31,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:31,794 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2022-11-20 09:28:31,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:32,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:32,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1842534286, now seen corresponding path program 4 times [2022-11-20 09:28:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:32,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116082376] [2022-11-20 09:28:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:32,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116082376] [2022-11-20 09:28:32,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116082376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:32,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463170395] [2022-11-20 09:28:32,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:28:32,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:32,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:32,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:32,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:28:32,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:28:32,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:32,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:28:32,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:32,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:32,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463170395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:32,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:32,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2022-11-20 09:28:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822178254] [2022-11-20 09:28:32,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:32,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 09:28:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 09:28:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 09:28:32,972 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:40,609 INFO L93 Difference]: Finished difference Result 360 states and 430 transitions. [2022-11-20 09:28:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-11-20 09:28:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-20 09:28:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:40,612 INFO L225 Difference]: With dead ends: 360 [2022-11-20 09:28:40,613 INFO L226 Difference]: Without dead ends: 296 [2022-11-20 09:28:40,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16311 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5653, Invalid=35353, Unknown=0, NotChecked=0, Total=41006 [2022-11-20 09:28:40,623 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1022 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:40,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 21 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 09:28:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-20 09:28:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 194. [2022-11-20 09:28:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1917098445595855) internal successors, (230), 193 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2022-11-20 09:28:40,663 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 43 [2022-11-20 09:28:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:40,663 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2022-11-20 09:28:40,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2022-11-20 09:28:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 09:28:40,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:40,666 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1] [2022-11-20 09:28:40,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:40,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:40,871 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -369537692, now seen corresponding path program 5 times [2022-11-20 09:28:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679818579] [2022-11-20 09:28:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 19 proven. 163 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:28:41,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:41,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679818579] [2022-11-20 09:28:41,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679818579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:41,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021664541] [2022-11-20 09:28:41,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:28:41,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:41,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:41,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:41,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:28:41,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-20 09:28:41,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:41,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:28:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 09:28:41,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 09:28:41,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021664541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:41,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:41,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2022-11-20 09:28:41,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419348626] [2022-11-20 09:28:41,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 09:28:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 09:28:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2022-11-20 09:28:41,826 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:43,498 INFO L93 Difference]: Finished difference Result 615 states and 726 transitions. [2022-11-20 09:28:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 09:28:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-20 09:28:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:43,501 INFO L225 Difference]: With dead ends: 615 [2022-11-20 09:28:43,501 INFO L226 Difference]: Without dead ends: 443 [2022-11-20 09:28:43,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1328, Invalid=4372, Unknown=0, NotChecked=0, Total=5700 [2022-11-20 09:28:43,504 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 162 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:43,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 19 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:28:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-20 09:28:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 391. [2022-11-20 09:28:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.1564102564102565) internal successors, (451), 390 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2022-11-20 09:28:43,575 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 50 [2022-11-20 09:28:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:43,575 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2022-11-20 09:28:43,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2022-11-20 09:28:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 09:28:43,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:43,578 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 5, 5, 5, 1, 1, 1, 1] [2022-11-20 09:28:43,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 09:28:43,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1350252270, now seen corresponding path program 6 times [2022-11-20 09:28:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:43,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942495118] [2022-11-20 09:28:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:28:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942495118] [2022-11-20 09:28:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942495118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349857031] [2022-11-20 09:28:43,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:28:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:43,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:43,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:28:44,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-20 09:28:44,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:44,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:28:44,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 46 proven. 157 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 09:28:44,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 196 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 09:28:44,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349857031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:44,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:44,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2022-11-20 09:28:44,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105803414] [2022-11-20 09:28:44,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:44,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 09:28:44,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:44,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 09:28:44,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-11-20 09:28:44,471 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:52,442 INFO L93 Difference]: Finished difference Result 1792 states and 2148 transitions. [2022-11-20 09:28:52,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-11-20 09:28:52,443 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-20 09:28:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:52,449 INFO L225 Difference]: With dead ends: 1792 [2022-11-20 09:28:52,450 INFO L226 Difference]: Without dead ends: 1791 [2022-11-20 09:28:52,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30921 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=12783, Invalid=52497, Unknown=0, NotChecked=0, Total=65280 [2022-11-20 09:28:52,457 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 496 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:52,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 16 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:28:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-11-20 09:28:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 610. [2022-11-20 09:28:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.1592775041050902) internal successors, (706), 609 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 706 transitions. [2022-11-20 09:28:52,562 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 706 transitions. Word has length 56 [2022-11-20 09:28:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:52,563 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 706 transitions. [2022-11-20 09:28:52,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 706 transitions. [2022-11-20 09:28:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 09:28:52,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:52,566 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2022-11-20 09:28:52,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:28:52,772 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:28:52,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash 529185006, now seen corresponding path program 7 times [2022-11-20 09:28:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:52,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033649582] [2022-11-20 09:28:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:28:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:53,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033649582] [2022-11-20 09:28:53,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033649582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:53,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95882089] [2022-11-20 09:28:53,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:28:53,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:53,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:53,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:53,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:28:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:53,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:28:53,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:28:53,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:28:53,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95882089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:53,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:53,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-20 09:28:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152739015] [2022-11-20 09:28:53,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:53,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 09:28:53,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 09:28:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 09:28:53,701 INFO L87 Difference]: Start difference. First operand 610 states and 706 transitions. Second operand has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:59,608 INFO L93 Difference]: Finished difference Result 4763 states and 5599 transitions. [2022-11-20 09:28:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-20 09:28:59,609 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-20 09:28:59,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:59,624 INFO L225 Difference]: With dead ends: 4763 [2022-11-20 09:28:59,624 INFO L226 Difference]: Without dead ends: 4762 [2022-11-20 09:28:59,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16160 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9119, Invalid=29101, Unknown=0, NotChecked=0, Total=38220 [2022-11-20 09:28:59,657 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 670 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:59,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 27 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:28:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2022-11-20 09:28:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 1183. [2022-11-20 09:28:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1455160744500845) internal successors, (1354), 1182 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1354 transitions. [2022-11-20 09:28:59,899 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1354 transitions. Word has length 79 [2022-11-20 09:28:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:59,900 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1354 transitions. [2022-11-20 09:28:59,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1354 transitions. [2022-11-20 09:28:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 09:28:59,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:59,903 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 11, 10, 10, 10, 1, 1, 1, 1] [2022-11-20 09:28:59,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 09:29:00,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:29:00,116 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:29:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 480518066, now seen corresponding path program 8 times [2022-11-20 09:29:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:00,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635619346] [2022-11-20 09:29:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 380 proven. 92 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-20 09:29:00,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:00,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635619346] [2022-11-20 09:29:00,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635619346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:00,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463312814] [2022-11-20 09:29:00,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:00,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:00,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:00,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:29:00,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:29:00,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:00,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:29:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 779 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 09:29:01,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 1 proven. 778 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 09:29:01,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463312814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:01,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:01,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2022-11-20 09:29:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89538789] [2022-11-20 09:29:01,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 09:29:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 09:29:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 09:29:01,671 INFO L87 Difference]: Start difference. First operand 1183 states and 1354 transitions. Second operand has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:57,879 INFO L93 Difference]: Finished difference Result 14418 states and 17384 transitions. [2022-11-20 09:29:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 887 states. [2022-11-20 09:29:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-20 09:29:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:57,908 INFO L225 Difference]: With dead ends: 14418 [2022-11-20 09:29:57,908 INFO L226 Difference]: Without dead ends: 13834 [2022-11-20 09:29:57,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 917 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424255 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=83086, Invalid=760556, Unknown=0, NotChecked=0, Total=843642 [2022-11-20 09:29:57,953 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3502 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1212 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:57,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 20 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1212 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 09:29:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2022-11-20 09:29:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 5483. [2022-11-20 09:29:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 5482 states have (on average 1.1742064939802992) internal successors, (6437), 5482 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6437 transitions. [2022-11-20 09:29:59,448 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6437 transitions. Word has length 97 [2022-11-20 09:29:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:59,448 INFO L495 AbstractCegarLoop]: Abstraction has 5483 states and 6437 transitions. [2022-11-20 09:29:59,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6437 transitions. [2022-11-20 09:29:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-20 09:29:59,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:59,458 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 19, 18, 18, 18, 1, 1, 1, 1] [2022-11-20 09:29:59,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:29:59,663 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:29:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2108411831, now seen corresponding path program 9 times [2022-11-20 09:29:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:59,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802401570] [2022-11-20 09:29:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 0 proven. 1837 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-20 09:30:00,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:00,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802401570] [2022-11-20 09:30:00,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802401570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:00,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680893597] [2022-11-20 09:30:00,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:30:00,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:00,314 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:00,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:30:00,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-11-20 09:30:00,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:00,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 09:30:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-20 09:30:00,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-20 09:30:01,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680893597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:01,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:01,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 46 [2022-11-20 09:30:01,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863386267] [2022-11-20 09:30:01,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 09:30:01,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 09:30:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 09:30:01,571 INFO L87 Difference]: Start difference. First operand 5483 states and 6437 transitions. Second operand has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:14,565 INFO L93 Difference]: Finished difference Result 38309 states and 45691 transitions. [2022-11-20 09:31:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 674 states. [2022-11-20 09:31:14,566 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-11-20 09:31:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:14,659 INFO L225 Difference]: With dead ends: 38309 [2022-11-20 09:31:14,660 INFO L226 Difference]: Without dead ends: 38308 [2022-11-20 09:31:14,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 712 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252889 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=81696, Invalid=427386, Unknown=0, NotChecked=0, Total=509082 [2022-11-20 09:31:14,698 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6082 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 2446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6082 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2446 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:14,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6082 Valid, 20 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2446 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 09:31:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38308 states. [2022-11-20 09:31:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38308 to 4807. [2022-11-20 09:31:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4806 states have (on average 1.188930503537245) internal successors, (5714), 4806 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 5714 transitions. [2022-11-20 09:31:16,479 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 5714 transitions. Word has length 150 [2022-11-20 09:31:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:16,479 INFO L495 AbstractCegarLoop]: Abstraction has 4807 states and 5714 transitions. [2022-11-20 09:31:16,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 5714 transitions. [2022-11-20 09:31:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 09:31:16,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:16,486 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2022-11-20 09:31:16,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:16,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:31:16,694 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:31:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash -472821010, now seen corresponding path program 10 times [2022-11-20 09:31:16,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:16,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504947817] [2022-11-20 09:31:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 09:31:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:17,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504947817] [2022-11-20 09:31:17,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504947817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:17,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421084221] [2022-11-20 09:31:17,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:31:17,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:17,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:17,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:31:17,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:31:17,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:17,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 09:31:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 09:31:17,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 09:31:18,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421084221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:18,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:18,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2022-11-20 09:31:18,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598999797] [2022-11-20 09:31:18,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-20 09:31:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-20 09:31:18,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2022-11-20 09:31:18,899 INFO L87 Difference]: Start difference. First operand 4807 states and 5714 transitions. Second operand has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:18,799 INFO L93 Difference]: Finished difference Result 124956 states and 148729 transitions. [2022-11-20 09:32:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 406 states. [2022-11-20 09:32:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-11-20 09:32:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:19,086 INFO L225 Difference]: With dead ends: 124956 [2022-11-20 09:32:19,087 INFO L226 Difference]: Without dead ends: 124955 [2022-11-20 09:32:19,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75530 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=39677, Invalid=129655, Unknown=0, NotChecked=0, Total=169332 [2022-11-20 09:32:19,148 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1790 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:19,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 44 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:32:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124955 states. [2022-11-20 09:32:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124955 to 18053. [2022-11-20 09:32:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 1.193718147573676) internal successors, (21549), 18052 states have internal predecessors, (21549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 21549 transitions. [2022-11-20 09:32:25,228 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 21549 transitions. Word has length 163 [2022-11-20 09:32:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:25,228 INFO L495 AbstractCegarLoop]: Abstraction has 18053 states and 21549 transitions. [2022-11-20 09:32:25,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 21549 transitions. [2022-11-20 09:32:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-20 09:32:25,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:25,241 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 27, 26, 26, 26, 1, 1, 1, 1] [2022-11-20 09:32:25,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-20 09:32:25,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:32:25,446 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:32:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash 989192194, now seen corresponding path program 11 times [2022-11-20 09:32:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:25,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320535371] [2022-11-20 09:32:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 0 proven. 3602 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2022-11-20 09:32:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320535371] [2022-11-20 09:32:26,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320535371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885190477] [2022-11-20 09:32:26,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:32:26,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:26,239 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:26,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:32:26,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2022-11-20 09:32:26,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 09:32:26,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 974 proven. 3625 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 09:32:27,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 858 proven. 3741 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 09:32:29,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885190477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:29,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:29,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36, 36] total 80 [2022-11-20 09:32:29,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034035185] [2022-11-20 09:32:29,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:29,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-20 09:32:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-20 09:32:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=5523, Unknown=0, NotChecked=0, Total=6320 [2022-11-20 09:32:29,408 INFO L87 Difference]: Start difference. First operand 18053 states and 21549 transitions. Second operand has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:03,337 INFO L93 Difference]: Finished difference Result 44947 states and 53155 transitions. [2022-11-20 09:33:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2022-11-20 09:33:03,338 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2022-11-20 09:33:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:03,386 INFO L225 Difference]: With dead ends: 44947 [2022-11-20 09:33:03,386 INFO L226 Difference]: Without dead ends: 27592 [2022-11-20 09:33:03,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 385 SyntacticMatches, 12 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73155 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=18055, Invalid=175985, Unknown=0, NotChecked=0, Total=194040 [2022-11-20 09:33:03,418 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2398 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 7089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:03,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 27 Invalid, 7089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 6167 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 09:33:03,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27592 states. [2022-11-20 09:33:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27592 to 14754. [2022-11-20 09:33:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14754 states, 14753 states have (on average 1.155290449400122) internal successors, (17044), 14753 states have internal predecessors, (17044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14754 states to 14754 states and 17044 transitions. [2022-11-20 09:33:12,067 INFO L78 Accepts]: Start accepts. Automaton has 14754 states and 17044 transitions. Word has length 227 [2022-11-20 09:33:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:12,067 INFO L495 AbstractCegarLoop]: Abstraction has 14754 states and 17044 transitions. [2022-11-20 09:33:12,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 14754 states and 17044 transitions. [2022-11-20 09:33:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-20 09:33:12,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:12,088 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 22, 21, 21, 21, 1, 1, 1, 1] [2022-11-20 09:33:12,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 09:33:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:12,293 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:33:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:12,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1646657120, now seen corresponding path program 12 times [2022-11-20 09:33:12,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:12,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674247203] [2022-11-20 09:33:12,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:12,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 0 proven. 3501 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2022-11-20 09:33:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:12,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674247203] [2022-11-20 09:33:12,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674247203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:12,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961721664] [2022-11-20 09:33:12,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:33:12,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:12,927 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:12,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:33:13,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-11-20 09:33:13,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:13,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:33:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 820 proven. 2681 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2022-11-20 09:33:13,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 56 proven. 3445 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2022-11-20 09:33:14,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961721664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:14,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:14,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-11-20 09:33:14,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906210481] [2022-11-20 09:33:14,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:14,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 09:33:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:14,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 09:33:14,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1718, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 09:33:14,495 INFO L87 Difference]: Start difference. First operand 14754 states and 17044 transitions. Second operand has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:01,239 INFO L93 Difference]: Finished difference Result 42613 states and 50641 transitions. [2022-11-20 09:34:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 470 states. [2022-11-20 09:34:01,240 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2022-11-20 09:34:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:01,315 INFO L225 Difference]: With dead ends: 42613 [2022-11-20 09:34:01,316 INFO L226 Difference]: Without dead ends: 42612 [2022-11-20 09:34:01,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126541 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=43704, Invalid=206796, Unknown=0, NotChecked=0, Total=250500 [2022-11-20 09:34:01,337 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1416 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:01,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 23 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 09:34:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42612 states. [2022-11-20 09:34:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42612 to 10951. [2022-11-20 09:34:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10951 states, 10950 states have (on average 1.1557990867579908) internal successors, (12656), 10950 states have internal predecessors, (12656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10951 states to 10951 states and 12656 transitions. [2022-11-20 09:34:08,748 INFO L78 Accepts]: Start accepts. Automaton has 10951 states and 12656 transitions. Word has length 264 [2022-11-20 09:34:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:08,749 INFO L495 AbstractCegarLoop]: Abstraction has 10951 states and 12656 transitions. [2022-11-20 09:34:08,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10951 states and 12656 transitions. [2022-11-20 09:34:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-20 09:34:08,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:08,763 INFO L195 NwaCegarLoop]: trace histogram [61, 60, 60, 23, 22, 22, 22, 1, 1, 1, 1] [2022-11-20 09:34:08,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:08,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:08,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:34:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash -13351997, now seen corresponding path program 13 times [2022-11-20 09:34:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:08,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246334629] [2022-11-20 09:34:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 0 proven. 4043 refuted. 0 times theorem prover too weak. 3675 trivial. 0 not checked. [2022-11-20 09:34:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:09,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246334629] [2022-11-20 09:34:09,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246334629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:09,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177247754] [2022-11-20 09:34:09,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:34:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:09,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:09,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:34:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:09,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 09:34:09,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 4022 proven. 977 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2022-11-20 09:34:10,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 3955 proven. 1044 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2022-11-20 09:34:11,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177247754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:11,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:34:11,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 58 [2022-11-20 09:34:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302196194] [2022-11-20 09:34:11,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-20 09:34:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-20 09:34:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2935, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 09:34:11,676 INFO L87 Difference]: Start difference. First operand 10951 states and 12656 transitions. Second operand has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:37,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:37,136 INFO L93 Difference]: Finished difference Result 16148 states and 18687 transitions. [2022-11-20 09:34:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2022-11-20 09:34:37,137 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-11-20 09:34:37,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:37,154 INFO L225 Difference]: With dead ends: 16148 [2022-11-20 09:34:37,154 INFO L226 Difference]: Without dead ends: 14269 [2022-11-20 09:34:37,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 505 SyntacticMatches, 6 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28590 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=9105, Invalid=70137, Unknown=0, NotChecked=0, Total=79242 [2022-11-20 09:34:37,164 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1976 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:37,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 25 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 09:34:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14269 states. [2022-11-20 09:34:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 11633. [2022-11-20 09:34:44,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11633 states, 11632 states have (on average 1.1587001375515817) internal successors, (13478), 11632 states have internal predecessors, (13478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11633 states to 11633 states and 13478 transitions. [2022-11-20 09:34:44,886 INFO L78 Accepts]: Start accepts. Automaton has 11633 states and 13478 transitions. Word has length 274 [2022-11-20 09:34:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:44,887 INFO L495 AbstractCegarLoop]: Abstraction has 11633 states and 13478 transitions. [2022-11-20 09:34:44,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11633 states and 13478 transitions. [2022-11-20 09:34:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-20 09:34:44,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:44,902 INFO L195 NwaCegarLoop]: trace histogram [51, 50, 50, 34, 33, 33, 33, 1, 1, 1, 1] [2022-11-20 09:34:44,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:45,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:45,112 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 09:34:45,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:45,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1035485658, now seen corresponding path program 14 times [2022-11-20 09:34:45,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:45,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842356710] [2022-11-20 09:34:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:45,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7603 backedges. 0 proven. 5555 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2022-11-20 09:34:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842356710] [2022-11-20 09:34:46,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842356710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965281354] [2022-11-20 09:34:46,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:34:46,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:46,165 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39d0d32-28c9-4bb4-93fd-424536cc352d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:34:46,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:34:46,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:46,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 09:34:46,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7603 backedges. 0 proven. 7510 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 09:34:47,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7603 backedges. 1 proven. 7509 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 09:34:49,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965281354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:49,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:34:49,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 39, 39] total 83 [2022-11-20 09:34:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443432362] [2022-11-20 09:34:49,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:49,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-20 09:34:49,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-20 09:34:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1750, Invalid=5222, Unknown=0, NotChecked=0, Total=6972 [2022-11-20 09:34:49,180 INFO L87 Difference]: Start difference. First operand 11633 states and 13478 transitions. Second operand has 84 states, 83 states have (on average 6.0843373493975905) internal successors, (505), 84 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)